Rib fracture backrest

Abstract

The application discloses a rib fracture backrest frame, which comprises a base frame, a backrest and a rib nursing assembly, the base frame is provided with a fixing rod, the lower end of the backrest is hinged to the base frame to form a rotating fulcrum, the back surface of the backrest is hinged to a sliding support rod, the bottom end of the sliding support rod is hinged to a sliding part, the sliding part is slidingly assembled to the fixing rod, and a locking mechanism is arranged between the sliding part and the fixing rod; the rib nursing assembly comprises a belt body and a plurality of air bags, the plurality of air bags are sequentially arranged along the upward extension direction of the backrest, each air bag is provided with an air nozzle for independent inflation and deflation, and each air bag applies pressure to the rib affected area of a patient through the belt body. The backrest, the sliding support rod and the base frame form a triangular stable support structure, the backrest can be steplessly adjusted in angle, the whole cycle rehabilitation body position of the patient can be adapted, secondary injury caused by backrest falling back can be effectively prevented, and the different rib fracture affected areas can be subjected to partition type local pressure support, so that the thoracic cavity abnormal movement is accurately limited, and the fracture end rubbing pain is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of medical devices, and in particular to a backrest for rib fractures. Background Technology

[0002] Rib fractures are a common chest trauma condition. Patients require prolonged semi-recumbent positioning (30° to 75°) during the acute phase and post-operatively to improve ventilation, promote sputum expectoration, and ensure normal food intake. Positioning and chest wall immobilization are core nursing care components during rib fracture rehabilitation. Currently, backrest support devices used for bed rest in rib fracture patients have two major technical deficiencies, becoming key technical bottlenecks that hinder patient recovery and lead to nursing complications.

[0003] Firstly, existing backrest support structures have poor angle adjustment performance and insufficient support stability, making them unsuitable for the full-cycle rehabilitation positioning needs of rib fracture patients. Most existing clinical backrest support devices are fixed angle structures or simple sliding adjustment structures. Most devices can only achieve fixed angle adjustment and cannot achieve stepless angle adaptation within the range of 0-75°. This makes it difficult to match the differentiated positioning needs of patients from postoperative supine position, to the reclining position during the recovery period, to the semi-recumbent position during the rehabilitation period, resulting in poor positional adaptability.

[0004] Secondly, existing backrest support devices lack targeted segmental decompression and flexible fixation structures for the rib cage, failing to adapt to the stress characteristics of rib fracture patients, leading to significant clinical nursing challenges. Currently, the backrest support devices used in clinical practice are all general-purpose, integral support designs, without providing specific optimization designs for fracture sites, rib cage movement restriction, and local pressure balance control for rib fracture patients. Summary of the Invention

[0005] The present invention aims to solve the technical problems existing in the above-mentioned related technologies and proposes a backrest for rib fractures to meet the needs of rib fracture patients for full-cycle, personalized and safe bed rest rehabilitation care.

[0006] A rib fracture backrest according to a first aspect of the present invention includes: The base frame is equipped with fixed rods arranged in the front-to-back direction; The backrest has its lower end hinged to the base frame to form a rotation fulcrum. A sliding support rod is hinged to the back of the backrest. A sliding part is hinged to the end of the sliding support rod away from the backrest. The sliding part slides along the fixed rod and drives the backrest to rotate relative to the base frame through the sliding support rod. A locking mechanism is provided between the sliding part and the fixed rod to lock the sliding position of the sliding part and the fixed rod. A rib care kit includes a strap and multiple airbags arranged sequentially along the upward extension of the backrest. Each airbag is equipped with an air nozzle for individual inflation and deflation. The strap detachably secures all the airbags to the front of the backrest. When the strap is tightened, the multiple airbags can apply pressure to the affected area of ​​the patient's ribs.

[0007] A rib fracture backrest according to an embodiment of the present invention has at least the following beneficial effects: This technology forms a stable triangular support structure between the backrest, the sliding support rod, and the base frame. The tilt angle of the backrest can be steplessly adjusted by sliding the sliding part along the fixed rod, and the tilt angle can be firmly locked by a locking mechanism. This effectively avoids sudden drop and displacement of the backrest during use, preventing secondary injury to the patient's ribs. It can precisely adapt to the patient's multi-stage rehabilitation posture needs within the 0° to 75° range, including lying flat, reclining, and semi-sitting positions. The posture adjustment is flexible, and the overall support is solid. The rib care component features multiple airbags arranged along the backrest and extending upwards, each equipped with an independent air nozzle. These airbags provide targeted local support and pressure to different rib fracture sites. The inflation volume of the corresponding airbag can be individually adjusted according to the specific fracture location, precisely restricting abnormal chest wall movement, reducing friction pain at the fracture ends, and adapting to the chest circumference of patients of different body types for complete bandaging and fixation. This avoids the problems of uneven pressure distribution and easy compression of the chest wall affecting breathing that are common with traditional one-piece support systems, significantly optimizing the positional care and chest wall fixation care for patients with rib fractures during bed rest.

[0008] According to some embodiments of the present invention, the rib fracture backrest frame further includes a seat cushion, which is mounted on the base frame and abuts against the lower end of the backrest.

[0009] According to some embodiments of the present invention, the surfaces of the backrest and the seat cushion are both configured as air cushions, and the surface of the air cushion is provided with wavy stripes.

[0010] According to some embodiments of the present invention, the fixed rod is provided with a sliding groove in the front-back direction, and the locking mechanism includes a locking tooth disposed at the bottom of the sliding groove and a locking claw disposed at the lower end of the sliding part. The sliding part locks the sliding part and the fixed rod in the sliding groove by means of the locking claw and the locking tooth.

[0011] According to some embodiments of the present invention, the slide groove includes a sliding area and a locking area, the locking teeth are disposed in the locking area, and the height of the sliding area is not less than the overall height of the sliding part, so that the claw of the sliding part can disengage from the locking teeth upward and slide back and forth along the slide groove.

[0012] According to some embodiments of the present invention, the pawl is a ratchet pawl, the pawl is a ratchet tooth, and the sliding part is locked in the sliding groove in one direction to the back-to-back rotating position by the ratchet pawl and the ratchet tooth.

[0013] According to some embodiments of the present invention, the sliding part is provided with a retractable telescopic rod at the end away from the pawl, and a spring is sleeved on the telescopic rod. The spring normally pushes the sliding part closer to the locking area.

[0014] According to some embodiments of the present invention, the rib fracture backrest further includes an air pump and a multi-way solenoid valve, wherein the air pump distributes airflow to the plurality of air nozzles through the multi-way solenoid valve.

[0015] According to some embodiments of the present invention, a pressure sensor is provided on the connecting pipe of the air pump. When the air pump is connected to any one of the airbags, the pressure sensor is used to detect the internal air pressure of the airbag.

[0016] According to some embodiments of the present invention, the rib fracture backrest further includes a headrest with a replaceable pillow core, and the headrest is detachably connected to the backrest.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the rib fracture backrest frame provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the sliding part within the groove of the fixed rod provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of multiple airbags arranged according to an embodiment of the present invention.

[0019] In the attached diagram: 100-base frame, 200-backrest, 300-sliding support assembly, 400-rib care component, 500-seat cushion, 110-fixing rod, 120-slide groove, 121-sliding area, 122-locking area, 332-locking tooth, 600-headrest, 310-sliding support rod, 320-sliding part, 330-locking mechanism, 331-claw, 321-telescopic rod, 322-spring, 410-belt body, 420-airbag, 421-air nozzle, 130-control button, 510-wavy stripe. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0022] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0024] like Figure 1 As shown, this embodiment of the invention provides a rib fracture backrest, which is placed on a conventional hospital bed mattress. The rib fracture backrest mainly includes a base frame 100, a backrest 200, a sliding support assembly 300, a rib care component 400, and a seat cushion 500. The components work together to complete multiple functions such as stepless adjustment of the backrest angle 200 and flexible pressure fixation of the thoracic cavity. It can specifically solve clinical pain points such as easy slippage during bed rest for rib fracture patients and inability to apply targeted pressure fixation to the fracture site.

[0025] First, let's describe the base frame 100 in detail. As the load-bearing base for the rib fracture backrest, the base frame 100 is constructed from lightweight, high-strength aluminum alloy profiles. The overall frame size is compatible with standard medical bed specifications. All edges of the base frame 100 are rounded to completely eliminate sharp corners, effectively preventing injury to patients or caregivers during use. The sides of the base frame 100 frame are integrally formed with fixing slots. These slots can directly engage with the edge of the bed board, providing auxiliary fixation between the base frame 100 and the bed through the limiting action of the slots and the bed board. Structurally, this prevents the entire backrest from slipping or shifting during patient leaning or turning. At the same time, a whole anti-slip pad is attached to the bottom surface of the base frame 100. The anti-slip pad is completely attached to the lower surface of the base frame 100. When the base frame 100 is placed on the surface of the hospital bed mattress, the anti-slip pad can increase the coefficient of friction between the base frame 100 and the mattress, further improving the placement stability of the base frame 100 and reducing the risk of overall device displacement.

[0026] To achieve sliding support for the backrest 200, the base frame 100 is equipped with a fixing rod 110 along the front-to-back direction. The fixing rod 110 is arranged parallel to the long side of the bed board, and provides a sliding reference track and load-bearing support foundation for the subsequent sliding support assembly 300. Figure 2 As shown, specifically, the middle of the fixed rod 110 is provided with a sliding groove 120 with a lateral opening along the front-back direction. The interior of the sliding groove 120 is divided into upper and lower functional areas. The upper section is the sliding area 121 and the lower section is the locking area 122. Multiple locking teeth 332 are evenly spaced at the bottom of the locking area 122 of the sliding groove 120. The locking teeth 332 are equidistantly distributed along the arrangement direction of the sliding groove 120. The vertical setting height of the sliding area 121 is greater than the vertical setting height of the locking area 122.

[0027] On the other side, such as Figure 1 As shown, the backrest 200 is the main support component for the patient's upper body. It is a pad structure. The lower end of the backrest 200 is hinged to the frame of the base frame 100 near the seat cushion 500. The hinged joint forms the only rotation fulcrum for the backrest 200 to rotate. The backrest 200 can rotate up and down with this hinge fulcrum as the center, thereby realizing the posture switch from lying flat against the bed to leaning back in a semi-sitting position.

[0028] Next, the backrest 200, facing the body, is used to install the rib care component 400. The backrest 200, facing away from the body, is hinged to the sliding support assembly 300. The overall frame of the backrest 200 is also made of lightweight rigid board material, with sufficient bending strength to evenly distribute the pressure generated by the body leaning against it, preventing the board surface from bending or deforming. At the top of the backrest 200, a headrest 600 is detachably installed via Velcro. The headrest 600 contains a removable and replaceable pillow core made of medical-grade high-elasticity breathable sponge cut in one piece. The headrest 600 is covered with a pure cotton waterproof fabric cover, with a zipper structure on the side of the cover, allowing caregivers to directly unzip and remove the internal pillow core for individual washing or replacement with a brand new pillow core. The bottom of the headrest 600 is sewn with multiple Velcro hooks, and the top of the backrest 200 has a matching Velcro loop. The Velcro allows for quick assembly and disassembly of the headrest 600 and backrest 200. The headrest 600 can be directly attached and secured when the patient needs head support, and can be easily removed for routine disinfection, wound care, or equipment storage. In addition, the backrest 200 has multiple pre-drilled mounting points for the subsequent rib care component 400 strap 410 to be threaded and secured.

[0029] On the other side, such as Figure 1 As shown in Figures 1 and 2, the sliding support assembly 300 is the core component for realizing stepless angle adjustment and posture locking to prevent falling back of the backrest 200. The sliding support assembly 300 includes a fixed rod 110, a sliding support rod 310, a sliding part 320, and a locking mechanism 330. The sliding support rod 310 is a long rod. The upper hinge point of the sliding support rod 310 is hinged and installed in the center of the back of the backrest 200. The lower hinge point of the sliding support rod 310 is hinged and assembled with the sliding part 320. The sliding part 320 is fully fitted into the groove 120 of the fixed rod 110. The sliding part 320 can be completely embedded in the cavity of the groove 120 and slide along the front and back direction of the groove 120. When an external force causes the sliding part 320 to move back and forth inside the slide groove 120, the sliding support rod 310 will follow the displacement of the sliding part 320 and change its tilt angle, thereby causing the backrest 200 to complete the flipping and lifting or falling action around the lower hinge fulcrum. This completes the continuous stepless adjustment of the tilt angle of the backrest 200, allowing the backrest 200 to be precisely stopped at any angle between 0° and 75°, without being limited to fixed angle adjustment, and adapting to the different chest tolerance and different body position needs of patients such as eating, expectoration, and oxygen inhalation.

[0030] Specifically, the lower end of the sliding part 320 is provided with a pawl 331, which is arranged facing the bottom of the sliding groove 120. The pawl 331 and the locking teeth 332 of the locking area 122 engage with each other to form a locking mechanism 330. In this embodiment, the pawl 331 can be a pawl, and the locking teeth 332 are correspondingly set as ratchet teeth. The teeth of the ratchet teeth are inclined towards the direction of the backrest 200 falling back. When the backrest 200 is subjected to the pressure of the human body and has a downward tendency, the pawl will firmly lock into the gap of the ratchet teeth to form a one-way limiting lock, so that the backrest 200 cannot rotate downward back. However, the backrest 200 can be lifted upward under the intervention of external force to increase the tilt angle of the backrest 200, thereby preventing the backrest 200 from suddenly falling down under pressure and pulling on the fractured thoracic cavity of the patient, avoiding displacement and friction of the fracture ends, causing severe pain or even secondary fracture damage.

[0031] Furthermore, the vertical height of the sliding area 121 is not less than the overall vertical height of the sliding part 320, ensuring that after the sliding part 320 is lifted upwards, the lower end claw 331 can completely disengage from the locking teeth 332 in the locking area 122, thereby allowing the sliding part 320 to slide smoothly back and forth along the slide groove 120 without being constrained by the locking teeth 332. When it is necessary to rotate the backrest 200 downwards, the caregiver holds the sliding support rod 310 with one hand and performs an upward lifting action to disengage the claw 331 of the sliding part 320 from the locking teeth 332 in the sliding area 121, while supporting the backrest 200 with the other hand to prevent it from falling downwards. Then, the caregiver operates with both hands to rotate the backrest 200 downwards to a preset angle. After this, the caregiver holds the sliding support rod 310 and performs a downward pressing action to make the claw 331 of the sliding part 320 re-engage into the corresponding locking teeth 332 to lock the downward rotation angle of the backrest 200. The fixing rod 110, relying on the aluminum alloy base frame 100, has a strong structural load-bearing capacity and can withstand a vertical pressure of no less than 100 kg, which fully meets the load requirements of adult rib fracture patients when using it.

[0032] Furthermore, the sliding part 320 is provided with two telescopic rods 321 at the end away from the pawl 331. One end of the telescopic rod 321 extends into the sliding part 320, and the other end is provided with a nail head. The outer diameter of the nail head is larger than the outer diameter of the rest of the telescopic rod 321. A spring 322 is sleeved on the outside of the telescopic rod 321. One end of the spring 322 abuts against the wall of the sliding part 320, and the other end abuts against the nail head of the telescopic rod 321. When the sliding part 320 is not pulled by external force, the spring 322 is always in a slightly compressed state. It relies on its own elasticity to push the sliding part 320 towards the locking area 122, so that the pawl 331 always remains pressed down against the pawl 332, maintaining the locking engagement relationship.

[0033] When the caregiver needs to adjust the tilt angle of the backrest 200, they only need to lift the sliding support rod 310 upwards, so that the sliding part 320 is raised along the sliding area 121 of the slide groove 120. The telescopic rod 321 is compressed and retracts inwards, and the spring 322 is further compressed to store elastic potential energy. The pawl 331 completely disengages from the locking tooth 332 as the sliding part 320 is lifted. At this time, the sliding part 320 is no longer limited by the locking tooth 332 and can slide backwards along the slide groove 120. The sliding support rod 310 then pulls the backrest 200 downwards. After the backrest 200 is adjusted to the target position, the external force of lifting the sliding support rod 310 is released. At this time, the spring 322 releases its elastic force to push the sliding part 320 down to reset. The pawl 331 then engages again with the locking tooth 332 in the corresponding position, thus completing the angle locking of the backrest 200. When using a ratchet and pawl structure, if only the backrest 200 is raised, there is no need to manually lift the sliding support rod 310. Simply pull the backrest 200 upwards. During the lifting process, the ratchet pawl will slide along the inclined surface of the ratchet teeth to switch the biting point step by step. The spring 322 continuously pushes the ratchet pawl to fit against the ratchet teeth. After the angle adjustment is completed, it will automatically lock and position itself. The operation process is simple and convenient, and patients can also operate it themselves.

[0034] It should be noted that, to prevent the sliding part 320 from detaching outward from the opening of the slide groove 120, after the sliding part 320 is installed in the slide groove 120, a cover plate with a long groove can be used to cover the opening of the slide groove 120. The height of the long groove is smaller than the overall height of the sliding part 320. The hinge axis between the sliding part 320 and the sliding support rod 310 can extend outward through the long groove, and the long groove also provides space for the sliding support rod 310 to be lifted upward. However, the sliding part 320 cannot detach entirely from the long groove of the cover plate. In addition, the fixing rod 110 does not penetrate either end of the slide groove 120 to prevent the sliding part 320 from detaching from the end of the slide groove 120.

[0035] On the other side, such as Figure 1 and Figure 3 As shown, the rib care component 400 is used to directly conform to the fractured area of ​​the patient's thoracic cage to achieve flexible compression and movement restriction. The rib care component 400 includes a strap 410 and multiple airbags 420. The multiple airbags 420 are arranged sequentially along the upward direction of the backrest 200, and each airbag 420 is an independent sealed air chamber structure. The base material of the airbags 420 is made of medical-grade PVC material with hot-pressed edges, which is soft and has good deformation ability and airtightness. Each airbag 420 is individually connected to an air nozzle 421, which has a one-way valve structure, enabling independent inflation and deflation of a single airbag 420.

[0036] In addition, the strap 410 is made of high-elasticity medical elastic strap. Large areas of Velcro male and female sides are sewn on both ends of the strap 410. The strap 410 is horizontally wrapped around the installation position reserved on the backrest 200. By relying on the wrapping binding of the strap 410, all airbags 420 are detachably restrained on the front side of the backrest 200 facing the human body, so that the airbags 420 abut against the patient's chest wall. After the caregiver wraps the strap 410 around the patient's chest and tightens the Velcro at both ends, the airbag 420 will fit snugly against the chest wall corresponding to the affected rib. Depending on the injury, whether it is a single or multiple rib fractures, the airbag 420 corresponding to the fracture site can be inflated and pressurized individually, while the airbag 420 corresponding to the chest wall area not involved in the fracture can be inflated less or not at all. This provides targeted local support and pressure to different rib fracture sites. The pressure from the inflated airbag 420 can restrict the large expansion and contraction of the chest wall during the patient's breathing or slight turning, reducing the continuous stinging pain caused by the friction between the fracture ends. It also avoids the shortcomings of traditional one-piece large-area airbags, which apply pressure evenly to the entire chest wall after inflation, compressing the chest cavity space and affecting the normal ventilation and gas exchange of the lungs and hindering the patient's expectoration and breathing. The belt 410 can be freely adjusted in circumference using Velcro, making it suitable for people with different chest circumferences, such as thin adults and obese patients. The airbag 420 can be detached along with the belt 410 for easy surface wiping and disinfection.

[0037] In this embodiment, an air supply control module consisting of an air pump and a multi-way solenoid valve is provided. The air pump and the multi-way solenoid valve are integrated and installed on the side of the aluminum alloy base frame 100. The multi-way solenoid valve has multiple independent air outlet channels. Each air outlet channel is connected to the air nozzle 421 of an airbag 420 through a hose. The multi-way solenoid valve can switch the air path on and off at will. After the air pump is started, the corresponding air path can be selected through the multi-way solenoid valve to complete the directional inflation of a single airbag 420.

[0038] Furthermore, the control box on the side of the base frame 100 is equipped with control buttons 130, and a wireless remote control is also provided for remote operation. The effective control distance between the remote control and the control module is no less than 5 meters. Nursing staff can perform functions such as inflation / deflation, pressure adjustment, and segmented control while standing outside the bed, without needing to make close contact with the patient's wound area, thus reducing the risk of infection. The control module has multiple preset conventional inflation pressure programs, with the inflation pressure range set between 5 kPa and 15 kPa to adapt to the inflation pressure requirements of different rehabilitation stages and the pressure requirements of the air cushion. Correspondingly, a pressure sensor is installed in series on the air pump's air passage. The pressure sensor collects the air pressure value of the air bag 420 inside the current air passage in real time. When the air pressure inside the air bag 420 reaches the upper limit threshold set in the program, the overpressure protection program is activated to automatically stop inflation, preventing the air bag 420 from bursting due to overpressure or causing damage to the patient's chest wall soft tissue due to pressure overload. The above-mentioned circuit control and wireless remote control can use existing technologies, and their specific working principles can be referred to existing technologies, which will not be repeated here.

[0039] In other embodiments, in addition to the multi-way solenoid valve branch air supply scheme, multiple micro air pumps can be used to supply air to each airbag 420 one-to-one, which can also realize the independent pressure regulation function of a single airbag 420, and is an equivalent replacement implementation method with the previous embodiment.

[0040] Finally, as Figure 1 As shown, the seat cushion 500 is detachably assembled and fixed to the frame of the base frame 100 near the patient's buttocks. The long side of the seat cushion 500 is precisely aligned with the hinge point at the lower end of the backrest 200. When the patient's upper body leans against the backrest 200, their buttocks can fully rest on the surface of the seat cushion 500, achieving continuous support for the lower back and buttocks. In this embodiment, both the backrest 200 and the seat cushion 500 are inflatable air cushion structures. The main substrate of the air cushion is made of medical-grade TPU material and is high-frequency heat-sealed. The air cushion and the air bag 420 can share the same air pump. The surface of the air cushion is divided into multiple parallel stripe textures. All the stripe textures are arranged in a wave pattern to form wave stripes 510. The wave stripes 510 can disperse the concentrated pressure points of the patient's waist, buttocks, and lumbosacral region to the entire air cushion, avoiding excessive local pressure that compresses the skin's blood circulation, thereby reducing the clinical risk of pressure sores or skin redness and damage caused by prolonged bed rest.

[0041] Furthermore, the lower surface of the seat cushion 500 is fitted with an anti-slip pad. After sitting down, the anti-slip pad adheres tightly to the surface of the base frame 100, preventing any localized slippage or wrinkling of the seat cushion 500. The air mattress has a pre-installed inflation valve, which can be connected to an external air source to inflate or deflate the mattress. Caregivers can adjust the inflation level according to the patient's body size to change the overall support height and firmness of the air mattress. When it's time to change bedding, the air inside the mattress can be completely deflated. The deflated air mattress is significantly thinner, softer, and flatter, meeting the requirements for folding and storage.

[0042] Furthermore, the outer surface of the air cushion has an anti-slip texture, which increases the friction between the patient's clothing and the air cushion, reducing the risk of the patient slipping off.

[0043] Using the above-described structure, this invention relies on the hinged connection of the backrest 200, sliding support rod 310, and base frame 100 to form a highly stable triangular support structure. The triangular structure itself possesses geometrically non-deformable characteristics. Combined with the pawl and ratchet one-way locking and spring 322 automatic reset structure, it completely solves the industry pain points of existing backrest frames that are prone to loosening and sliding after adjustment, causing secondary injury to rib fracture patients due to sudden tilting. Furthermore, the tilt angle of the backrest 200 can be continuously adjusted without any stops within the range of 0 to 75°, precisely matching the full-cycle positioning care needs of rib fracture patients during the acute postoperative period (lying flat for rest), the recovery period (small angle reclining), and the rehabilitation period (large angle semi-sitting for eating and sputum drainage). Secondly, the rib care component 400 uses a compartmentalized independent airbag 420 with independent airway control, which can precisely provide targeted local support and pressure for different rib fracture sites. It differentiates the inflation pressure of each airbag 420 to avoid the problem of excessive pressure on the integral airbag affecting the patient's normal breathing and ventilation, and has strong clinical application value.

[0044] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A backrest frame for rib fractures, characterized in that, include: The base frame (100) is provided with a fixing rod (110) arranged in the front-to-back direction. A backrest (200) is hinged at its lower end to the base frame (100) to form a rotation fulcrum. A sliding support rod (310) is hinged to the back of the backrest (200). A sliding part (320) is hinged to the end of the sliding support rod (310) away from the backrest (200). The sliding part (320) slides along the fixed rod (110). The sliding part (320) drives the backrest (200) to rotate relative to the base frame (100) through the sliding support rod (310). A locking mechanism (330) is arranged between the sliding part (320) and the fixed rod (110). The locking mechanism (330) is used to lock the sliding position of the sliding part (320) and the fixed rod (110). The rib care assembly (400) includes a strap (410) and multiple airbags (420) arranged sequentially along the upward extension direction of the backrest (200). Each airbag (420) is equipped with an air nozzle (421) for individual inflation and deflation. The strap (410) detachably binds all the airbags (420) to the front of the backrest (200). When the strap (410) is tightened, the multiple airbags (420) can apply pressure to the affected area of ​​the patient's ribs.

2. The rib fracture backrest according to claim 1, characterized in that: It also includes a seat cushion (500) which is mounted on the base frame (100) and is connected to the lower end of the backrest (200).

3. A backrest for rib fractures according to claim 2, characterized in that: The surfaces of the backrest (200) and the seat cushion (500) are both configured as air cushions, and the surface of the air cushion is provided with wavy stripes (510).

4. A backrest for rib fractures according to claim 1, characterized in that: The fixed rod (110) is provided with a sliding groove (120) in the front-to-back direction. The locking mechanism (330) includes a locking tooth (332) disposed at the bottom of the sliding groove (120) and a locking claw (331) disposed at the lower end of the sliding part (320). The sliding part (320) locks the sliding position of the sliding part (320) and the fixed rod (110) in the sliding groove (120) by the locking claw (331) and the locking tooth (332).

5. A backrest for rib fractures according to claim 4, characterized in that: The slide groove (120) includes a sliding area (121) and a locking area (122). The locking tooth (332) is located in the locking area (122). The height of the sliding area (121) is not less than the overall height of the sliding part (320), so that the claw (331) of the sliding part (320) can disengage from the locking tooth (332) and slide back and forth along the slide groove (120).

6. A backrest for rib fractures according to claim 5, characterized in that: The pawl (331) is a pawl, the pawl (332) is a ratchet, and the sliding part (320) locks the backrest (200) in the sliding groove (120) in a one-way manner through the pawl and the ratchet to the position where the backrest (200) rotates backward.

7. A backrest for rib fractures according to claim 5 or 6, characterized in that: The sliding part (320) has a telescopic rod (321) at the end away from the claw (331). The telescopic rod (321) is covered with a spring (322). The spring (322) normally pushes the sliding part (320) closer to the locking area (122).

8. A backrest for rib fractures according to claim 1, characterized in that: It also includes an air pump and a multi-way solenoid valve, wherein the air pump distributes airflow to the multiple air nozzles (421) via the multi-way solenoid valve.

9. A backrest for rib fractures according to claim 8, characterized in that: A pressure sensor is installed on the connecting pipe of the air pump. When the air pump is connected to any of the airbags (420), the pressure sensor is used to detect the internal air pressure of the airbag (420).

10. A backrest for rib fractures according to claim 1, characterized in that: It also includes a headrest (600) with a replaceable pillow core, and the headrest (600) is detachably connected to the backrest (200).

Images